#main a{
	background: #00ffff;
	display:block;
	width:100px;
	height:100px;
	float:left;
	border:1px solid #00ff00;
	text-align:center;
	line-height:100px;
	font-size: 20px;
	color:white;
}
#main a:hover{
	background: #80ffff;

	}
	